diff --git a/packages/block-library/src/comment-reply-link/block.json b/packages/block-library/src/comment-reply-link/block.json
index ea61ca3553f9c1..483a3d71b0f8d6 100644
--- a/packages/block-library/src/comment-reply-link/block.json
+++ b/packages/block-library/src/comment-reply-link/block.json
@@ -30,7 +30,11 @@
 			"__experimentalFontWeight": true,
 			"__experimentalFontStyle": true,
 			"__experimentalTextTransform": true,
-			"__experimentalLetterSpacing": true
+			"__experimentalTextDecoration": true,
+			"__experimentalLetterSpacing": true,
+			"__experimentalDefaultControls": {
+				"fontSize": true
+			}
 		},
 		"html": false
 	}